I can understand why Christopher wouldn't agree to a meeting.
[In reply to]

Can't Post

Its the political optics. Just as Jackson's reasons for wanting to "involve" Christopher et al had very little to do with wanting any oversight from them, just the legitimacy that conferring with them could bestow. Doubtless, Christopher desired to deny any possibility of seeming to bestow that legitimacy/approval. "Hear me, hounds of Sauron, Gandalf is here! Fly if you value your foul skins, I will shrivel you from tail to snout if you step within this circle!"

"Do not be to eager to deal out death in judgement. Even the very wise cannot see all ends."